Goats are used as a environmentally friendly way of
clearing difficult terrain of overgrowth, but the
downside
is the need to either fence off the many acres that need
to
be cleared or stay with them and watch that they don't
wander off.

With the Herdmeister 9000 Plus, each goat has
a collar
that administers a mild shock if it wanders out of a
prescribed area. Just program the area that needs to be
cleared by your goat herd and let them loose. The collars
won't let them go out of the designated area of a exact
shape that you've designated. You can even program
narrow paths to go from one area to the next.

Land clearing problems got you in a baahaaaahaad
mood?
Harsh herbicides getting your goat? Don't let expensive
land
clearing equipment butt into your profits. It would be-
hoof
ya to get the Herdmeister 9000 Plus system going.

The Heardmeister 9000 Plus. The "goat" to solution for
all
your land clearing needs.

I had a similar idea once but wondered if goats (well, I was using better animals) would consistently work out that the shocks are associated with an imaginary border. I was concerned that you would just end up with manic-depressive goats, addicted to medicated grass.

There are Amazon goats, and they're available for rental
if you need them (in some areas).

I suspect this could be handled the same way that
invisible dog fences work. It's not so much that the collar
prevents them from doing it, but it is the basis for
training them where they can go. In order for it to work
in a new area, it would probably require a multi part
signal (a "getting near the edge, at the edge, shock) sort
of thing.

Of course the invisible fence uses a buried wire that you
wouldn't want to bother with, but there's no reason you
couldn't use a GPS version, although it might cause
problems if you lose communication with one of the
satellites.

By the way, obviously these would be wireless collars
whose locations were tracked by GPS and
radio triangulation. You could instantly reconfigure
the areas being grazed with a graphic interface map
and the collars would administer a mild shock that
got progressively more intense as they approached
the boundary.

If you sprayed a dye in a line around the perimeter of the
area inside of which you have programmatically restricted
the goats, then the goats would have a visual referent for
the boundary. Such dyes are quite available; I've
personally used a green dye to enhance the color of
Christmas trees....

And by the way goats are considered highly intelligent. A
mother will show its young what not to eat (if it senses
poisonous plants) and there have been goats known to
imitate human speech. Seriously, not as a human stunt.